During dance practice, sasha drank 21⁄2 pints of water, and on the way home she drank 1⁄2 cup of water. how much water did she drink in total? cups and ounces

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me